[dpdk-dev] [PATCH v2 03/10] ethdev: silence -Wcast-align on pointer arithmetic
Cyril Chemparathy
cchemparathy at ezchip.com
Fri Jun 19 19:34:46 CEST 2015
Statistics offsets in the rte_stats_strings[] array are always 64-bit aligned.
However, the compiler is unaware of this fact and complains on -Wcast-align.
This patch modifies the code to use RTE_PTR_ADD(), thereby silencing the
compiler by casting through (void *).
Acked-by: Olivier Matz <olivier.matz at 6wind.com>
Signed-off-by: Cyril Chemparathy <cchemparathy at ezchip.com>
---
lib/librte_ether/rte_ethdev.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index e13fde5..02cd07f 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1742,8 +1742,7 @@ rte_eth_xstats_get(uint8_t port_id, struct rte_eth_xstats *xstats,
struct rte_eth_stats eth_stats;
struct rte_eth_dev *dev;
unsigned count, i, q;
- uint64_t val;
- char *stats_ptr;
+ uint64_t val, *stats_ptr;
if (!rte_eth_dev_is_valid_port(port_id)) {
PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
@@ -1770,8 +1769,9 @@ rte_eth_xstats_get(uint8_t port_id, struct rte_eth_xstats *xstats,
/* global stats */
for (i = 0; i < RTE_NB_STATS; i++) {
- stats_ptr = (char *)ð_stats + rte_stats_strings[i].offset;
- val = *(uint64_t *)stats_ptr;
+ stats_ptr = RTE_PTR_ADD(ð_stats,
+ rte_stats_strings[i].offset);
+ val = *stats_ptr;
snprintf(xstats[count].name, sizeof(xstats[count].name),
"%s", rte_stats_strings[i].name);
xstats[count++].value = val;
@@ -1780,10 +1780,10 @@ rte_eth_xstats_get(uint8_t port_id, struct rte_eth_xstats *xstats,
/* per-rxq stats */
for (q = 0; q < dev->data->nb_rx_queues; q++) {
for (i = 0; i < RTE_NB_RXQ_STATS; i++) {
- stats_ptr = (char *)ð_stats;
- stats_ptr += rte_rxq_stats_strings[i].offset;
- stats_ptr += q * sizeof(uint64_t);
- val = *(uint64_t *)stats_ptr;
+ stats_ptr = RTE_PTR_ADD(ð_stats,
+ rte_rxq_stats_strings[i].offset +
+ q * sizeof(uint64_t));
+ val = *stats_ptr;
snprintf(xstats[count].name, sizeof(xstats[count].name),
"rx_queue_%u_%s", q,
rte_rxq_stats_strings[i].name);
@@ -1794,10 +1794,10 @@ rte_eth_xstats_get(uint8_t port_id, struct rte_eth_xstats *xstats,
/* per-txq stats */
for (q = 0; q < dev->data->nb_tx_queues; q++) {
for (i = 0; i < RTE_NB_TXQ_STATS; i++) {
- stats_ptr = (char *)ð_stats;
- stats_ptr += rte_txq_stats_strings[i].offset;
- stats_ptr += q * sizeof(uint64_t);
- val = *(uint64_t *)stats_ptr;
+ stats_ptr = RTE_PTR_ADD(ð_stats,
+ rte_txq_stats_strings[i].offset +
+ q * sizeof(uint64_t));
+ val = *stats_ptr;
snprintf(xstats[count].name, sizeof(xstats[count].name),
"tx_queue_%u_%s", q,
rte_txq_stats_strings[i].name);
--
2.1.2
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